[go: up one dir, main page]

WO2016203720A1 - Dispositif auxiliaire de transmission d'énergie et système d'alimentation électrique sans fil - Google Patents

Dispositif auxiliaire de transmission d'énergie et système d'alimentation électrique sans fil Download PDF

Info

Publication number
WO2016203720A1
WO2016203720A1 PCT/JP2016/002609 JP2016002609W WO2016203720A1 WO 2016203720 A1 WO2016203720 A1 WO 2016203720A1 JP 2016002609 W JP2016002609 W JP 2016002609W WO 2016203720 A1 WO2016203720 A1 WO 2016203720A1
Authority
WO
WIPO (PCT)
Prior art keywords
power transmission
power
auxiliary device
pair
power receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/002609
Other languages
English (en)
Japanese (ja)
Inventor
哲也 楠本
齋藤　隆
善一 古田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Publication of WO2016203720A1 publication Critical patent/WO2016203720A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

Definitions

  • the present disclosure relates to a power transmission auxiliary device and a wireless power feeding system suitable for wireless power transmission.
  • Patent Document 1 For example, a magnetic field resonance type wireless power feeding system using a resonance phenomenon has been developed (see, for example, Patent Document 1).
  • the wireless power feeding system described in Patent Document 1 uses a technique in which a magnetic body is disposed on the side opposite to the power receiving coil as viewed from the power transmitting coil, and a magnetic body is disposed on the side opposite to the power transmitting coil as viewed from the power receiving coil. .
  • the magnetic field of the power transmission coil has directivity in the direction of the power reception coil by the magnetic material
  • the power reception coil has directivity in the direction of the power transmission coil by the magnetic material.
  • the degree of coupling of the magnetic field between the power transmission coil and the power reception coil is increased, so that the power transmission efficiency by magnetic resonance can be improved.
  • the inventors have developed a technology in which, for example, a master energizes a power transmission line such as a harness and a slave receives an electric field / magnetic field coupled to the power transmission line.
  • a master energizes a power transmission line such as a harness
  • a slave receives an electric field / magnetic field coupled to the power transmission line.
  • the current amplitude distribution on the power transmission line continuously changes due to the influence that the line length of the power transmission line becomes longer with respect to the wavelength of the transmission power.
  • the power receiving device is installed at a position where the current amplitude is low, the power supply efficiency is significantly reduced.
  • the present disclosure has been made in view of the above points, and the purpose of the present disclosure is to transmit power even when a region having a low current amplitude distribution exists when the current amplitude distribution continuously changes in the transmission line.
  • An object of the present invention is to provide a power transmission auxiliary device and a wireless power feeding system that can increase efficiency.
  • the power transmission auxiliary device has a configuration in which the power transmission device outputs AC power so that the current amplitude distribution continuously changes between the pair of power transmission lines, and the power reception device receives power from the power transmission lines in a predetermined region.
  • a coil having an opening arranged in the interlinkage region of the magnetic flux generated around the power transmission line;
  • a pair of power receiving electrodes arranged in correspondence with the pair of power transmission lines and receiving power from the power transmission line by an electric field.
  • the coil since the coil has an opening in the interlinkage region of the magnetic flux generated around the transmission line, the coil receives power by a magnetic field interlinking with the opening.
  • one or more power receiving electrodes are disposed in association with a pair of power transmission lines, power can be received from the pair of power transmission lines by an electric field.
  • electric power can be efficiently transmitted from the power transmission line by an electric field and a magnetic field, and the power transmission efficiency can be increased even when there is a region having a low current amplitude.
  • power can be received by a magnetic field even in a region where the current amplitude is high.
  • a wireless power feeding system includes a power transmission device that outputs AC power so that a current amplitude distribution continuously changes between a pair of power transmission lines, a power reception device that receives power from a power transmission line in a predetermined region, A power transmission auxiliary device according to the first aspect of the disclosure.
  • the power transmission efficiency can be increased even when a region having a low current amplitude distribution exists when the current amplitude distribution continuously changes in the transmission line.
  • FIG. 1 is a plan view schematically showing a configuration of a wireless power feeding system in the first embodiment of the present disclosure.
  • FIG. 2 is a vertical side view schematically showing the configuration of the power transmission auxiliary device along the line II-II in FIG.
  • FIG. 3 is a perspective view schematically showing the relationship between a part of the transmission line and the power transmission auxiliary device,
  • FIG. 4 is a diagram schematically showing an example of a configuration of a wireless power feeding system and a current amplitude distribution and a voltage amplitude distribution of a standing wave generated in a transmission line, FIG.
  • FIG. 5 is a diagram schematically showing an example of an installation form of a power transmission line and a power receiving antenna
  • FIG. 6 is a diagram schematically showing a simulation result
  • FIG. 7A is a longitudinal side view (part 1) schematically showing the configuration of the power transmission auxiliary device according to the second embodiment of the present disclosure along the line II-II in FIG.
  • FIG. 7B is a longitudinal side view (part 2) schematically showing the configuration of the power transmission auxiliary device according to the second embodiment of the present disclosure along the line II-II in FIG.
  • FIG. 8 is a longitudinal side view schematically showing the configuration of the power transmission auxiliary device in the third embodiment of the present disclosure along the line II-II in FIG.
  • FIG. 7A is a longitudinal side view (part 1) schematically showing the configuration of the power transmission auxiliary device according to the second embodiment of the present disclosure along the line II-II in FIG.
  • FIG. 7B is a longitudinal side view (part 2) schematically showing the configuration of the power transmission auxiliary device according to the second
  • FIG. 9 is a plan view schematically showing the configuration of the wireless power feeding system in the fourth embodiment of the present disclosure.
  • FIG. 10 is a perspective view schematically showing a relationship between a part of the transmission line and the power transmission auxiliary device
  • FIG. 11 is a plan view schematically showing the configuration of the wireless power feeding system in the fifth embodiment of the present disclosure.
  • 12 is a longitudinal side view schematically showing the configuration of the power transmission auxiliary device along the line XII-XII in FIG.
  • FIG. 13 is a longitudinal side view schematically illustrating the configuration of the power transmission auxiliary device according to the sixth embodiment of the present disclosure along the line II-II in FIG. 1.
  • the wireless power feeding system 1 is configured by coupling a power transmission device (master) 2 and power reception devices (slave) 3a to 3e by an electric / magnetic field through a power transmission antenna 4 as a power line. Is done.
  • a battery (not shown: power supply source) is connected to the power transmission device 2, and power is supplied to the plurality of power reception devices 3 a to 3 e through the power transmission antenna 4 according to the power of the battery.
  • the power reception devices 3 a to 3 e It operates according to these supplied powers.
  • the wireless power feeding system 1 is synonymous with a power line power feeding system. This wireless power feeding system 1 is preferably applied particularly to wireless power transmission of various sensors and actuators for vehicles.
  • the power transmission device 2 is configured by connecting a power transmission antenna 4 to a power feeding circuit 5 and is configured by connecting a terminator 7 to a part (end portion) of the power transmission antenna 4.
  • the power feeding circuit 5 of the power transmission device 2 outputs AC power (high frequency power, for example, sine wave voltage / current) having a predetermined frequency (for example, several MHz) to the power transmission antenna 4.
  • the power transmission antenna 4 is constituted by a twisted pair cable (twisted pair cable) having a pair of power transmission lines (equivalent to a pair of power transmission lines) 8 and 9. As shown in FIG.
  • the power transmission antenna 4 has a predetermined length (several meters) in a predetermined direction (one direction, for example, X direction) of twisted pair wires formed by twisting a pair of power transmission lines 8 and 9 facing each other. Degree) extended and arranged.
  • the predetermined direction may be a certain straight direction, but may be bent or bent.
  • a plurality of power receiving devices 3a to 3e are installed in the near field of the power transmitting antenna 4, and the power receiving antenna 10 is installed in a plurality of predetermined regions R1 to R5 in a predetermined direction.
  • the power is arranged so as to receive power in the predetermined regions R1 to R5.
  • Each of the power receiving devices 3a to 3e includes a power receiving antenna 10 and a load circuit 11 as shown in FIG.
  • the number of power receiving devices 3a may be one.
  • the power transmission antenna 4 has a pair of power transmission lines 8 and 9 coupled to a terminator 7 at the ends thereof.
  • This terminator 7 may be constituted by, for example, a resistor or a short circuit line.
  • the pair of power transmission lines 8 and 9 are configured in a loop shape using a pair of twisted wires (twisted pair wires) whose ends are coupled.
  • the power transmission antenna 4 includes a twisted portion 12 formed by twisting power transmission lines 8 and 9, and includes an opening 13 between adjacent twisted portions 12.
  • an opening 13a between specific twisted portions 12a (hereinafter referred to as a specific opening 13a) is provided larger than the openings between other twisted portions 12 or between the twisted portions 12 and 12a. It has been.
  • the power receiving antennas 10 of the power receiving devices 3a to 3e are installed around the specific opening 13a (near field).
  • the power receiving antenna 10 is configured by, for example, a loop-shaped coil having an opening 14, and links a magnetic flux generated from the specific opening 13 a of the power transmitting antenna 4 to the opening 14 of the power receiving antenna 10.
  • the power receiving antenna 10 can receive power from the power transmitting antenna 4 according to the electromagnetic induction phenomenon (mainly magnetic field).
  • the surface of the specific opening 13a and the surface of the opening 14 of the power receiving antenna 10 may be arranged in parallel.
  • the opening 14 of the power receiving antenna 10 is installed so as to face the specific opening 13a, for example. May be. If the opening 14 of the power receiving antenna 10 is installed so as to face the specific opening 13a, the magnetic flux interlinked with the power receiving antenna 10 can be increased, and the power transmission efficiency can be increased.
  • the power transmission antenna 4 can increase the magnetic flux generated from the specific opening 13 a more than the other opening 13 when the specific opening 13 a is provided so as to be larger than the other opening 13 using a twisted pair wire. Moreover, since the magnetic flux generated in the opening 13 between the adjacent twisted portions 12 is reversed adjacent to each other and cancels each other, it becomes difficult to output noise to the outside.
  • assistance apparatus 15 is installed in the circumference (near field) of the specific opening 13a.
  • the power transmission auxiliary device 15 is installed in each specific opening 13a (see FIG. 4) corresponding to each of the power receiving devices 3a to 3e.
  • the power transmission auxiliary device 15 is configured by electrically connecting a coil 16, a capacitor 17, and a power receiving electrode 18.
  • the coil 16 is configured to include an opening 20 having a normal direction in the Z direction by winding a conductive wire in a spiral cylinder shape, and is configured by a finite length solenoid having n turns (n ⁇ 1).
  • the coil 16 is arranged so that the opening 20 is linked with the magnetic flux generated from the power transmission antenna 4.
  • the surface normal direction of the opening 20 is set in a direction intersecting (for example, orthogonal to) the magnetic field formed by the power transmission antenna 4.
  • the coil 16 is disposed on the inner side of the specific opening 13 a of the power transmission antenna 4 in the XY direction, and at least one of the coils 16 is disposed in a facing region between the power transmission lines 8 and 9, for example. Department is installed.
  • a capacitor 17 is connected between both terminals 16a and 16b of the coil 16.
  • the capacitor 17 is preferably connected in parallel with the coil 16 so as to resonate at the same frequency as the frequency of the AC power output from the power supply circuit 5 (for example, about several MHz).
  • the capacitor 17 may or may not be provided, and even if the capacitor 17 is provided in this connection form, a capacitance value that resonates at the same frequency as the frequency of the AC power output from the power feeding circuit 5 is set. It is not necessary.
  • the capacitor 17 is One end thereof is structurally connected to the terminal 16a on the spiral cylindrical upper end node side of the finite length solenoid, and the other end is structurally connected to the terminal 16b on the spiral cylindrical lower end node side of the finite length solenoid.
  • a pair of power receiving electrodes 18 and 19 are installed around the coil 16 and are short-circuited to the coil 16. These power receiving electrodes 18 and 19 are arranged along the outer circumference of the coil 16 in the XY direction and along the inner circumference of the power transmission lines 8 and 9, respectively, corresponding to the power transmission lines 8 and 9.
  • Each of these power receiving electrodes 18 and 19 is configured, for example, by molding a conductive member into a predetermined shape.
  • the power receiving electrodes 18 and 19 are formed in a predetermined shape by, for example, being bent into a semicircular shape in the XY plane direction with a flat plate-like member standing in the Z direction.
  • the power receiving electrodes 18 and 19 have the same structure no matter which region is cut in the Z direction in the circumferential direction of the XY plane.
  • These power receiving electrodes 18 and 19 are located inside the respective power transmission lines 8 and 9 of the power transmission antenna 4 and are arranged with a part thereof inside the specific opening 13a.
  • the power receiving electrode 18 is installed with a close space between the power transmission line 8 and is configured so as to face the electric force line between the power receiving electrode 18 and the power transmission line 8.
  • the power receiving electrode 19 is provided with a close space between the power transmission line 9 and is disposed so as to face the electric force line between the power receiving electrode 19 and the power transmission line 9.
  • the power receiving electrodes 18 and 19 are arranged so as to be mainly capacitively coupled to the power transmission antenna 4, and can receive electric fields mainly from the respective power transmission lines 8 and 9 installed in the periphery on the power receiving surface.
  • one power receiving electrode 19 is electrically short-circuited at, for example, a terminal 16a which is an upper end node of one end of the coil 16.
  • the other power receiving electrode 18 is electrically short-circuited at, for example, a terminal 16b which is the lower end node of the other end of the coil 16.
  • FIG. 4 when the power feeding circuit 5 outputs AC power to the power transmission antenna 4, a standing wave is generated in the power transmission antenna 4.
  • the standing wave in FIG. 4 shows an example when the terminator 7 is constituted by a short-circuit line, and the current amplitude distribution and voltage amplitude distribution according to the installation positions of the power receiving devices 3a to 3e are schematically shown. Show. At this time, the current amplitude and voltage amplitude vary greatly depending on the region of the power transmission antenna 4.
  • the power transmission antenna 4 greatly radiates AC power from the specific opening 13a when radiating power to the outside.
  • the power receiving antenna 10 generates electromotive force by linking the magnetic flux generated by the alternating magnetic field of the power transmitting antenna 4 to the opening 14 and can receive power by this electromotive force.
  • This electromotive force is supplied to the load circuit 11.
  • the coil 16 of the power transmission auxiliary device 15 also links the magnetic flux generated by the AC magnetic field generated from the power transmission antenna 4 to generate an induced electromotive force.
  • the power receiving electrodes 18 and 19 are arranged around the power transmission lines 8 and 9, respectively. Therefore, the power receiving electrodes 18 and 19 can receive AC power generated by the power transmission lines 8 and 9 by an electric field.
  • the capacitor 17 is connected in parallel with the coil 16 and is configured to resonate at the same frequency as the frequency of the AC power supplied by the power feeding circuit 5. For this reason, the current flowing through the coil 16 can be increased as much as possible, the AC magnetic field generated from the opening 20 of the coil 16 of the power transmission auxiliary device 15 can be increased, and the induced electromotive force generated in the power receiving antenna 10 can be increased.
  • FIG. 6 shows circuit simulation results by the inventors.
  • This circuit simulation result shows the result when the opposing regions between the power transmission line 8 and the power receiving electrode 18 and between the power transmission line 9 and the power receiving electrode 19 are the same, and the coupling specification is changed to various values of the capacitance Cp. Yes.
  • This simulation result indicates the power supply [dB] to the power receiving devices 3d, 3b, and 3c installed at the respective positions Na, Nb, and Nc (regions R4, R2, and R3) illustrated in FIG.
  • the opposing length in which the power transmission line 8 and the power receiving electrode 18 face each other on the XY plane and the opposing length in which the power transmission line 9 and the power receiving electrode 19 face each other have the same value, and the inductance value of the coil 16 is 10 [ ⁇ H], The capacitance value of the capacitor 17 is 50 [pF].
  • the power supply amount is relatively low, but it can be seen that the power supply amount can be increased by providing the capacitor Cp.
  • the power receiving devices 3d, 3b, and 3c can be in any position Na, Nb, Nc (region R4). , R2, R3), it can be seen that the amount of power supplied to the power receiving devices 3d, 3b, 3c can be greatly increased.
  • this improvement degree changes according to the installation position (area
  • the power receiving device 3c is installed in the region R3 (position Nc: see FIG. 4) where the current amplitude is large and the voltage amplitude is small, the improvement in the amount of power supplied to the power receiving device 3c is low.
  • the degree of improvement is greatly increased. Therefore, when the power receiving antenna 10 of the power receiving device 3d is installed in a region where the current amplitude is small, the power supply amount can be greatly increased, and a particularly remarkable effect is achieved.
  • the magnetic field generated around the power transmission antenna 4 also becomes weak, and the induced electromotive force induced in the power receiving antenna 10 according to this magnetic field also becomes small. It is assumed that However, by providing the power transmission auxiliary device 15, the magnetic field generated on the opening 14 side of the power receiving antenna 10 can be increased according to the mutual induction action between the power transmission lines 8 and 9, the power transmission auxiliary device 15 and the power receiving antenna 10. Therefore, it is estimated that the amount of power supplied to the power receiving device 3d can be increased. In particular, in consideration of the simulation result shown in FIG.
  • the power transmission assisting device 15 receives the electric field as the main coupling, and the power receiving device 3d can increase the power supply amount according to the received power of the power transmission assisting device 15.
  • the current amplitude of the power transmission antenna 4 becomes high (the voltage is antinode and the current is node).
  • the power transmission assisting device 15 receives power with the magnetic field as the main coupling, and the power receiving device 3 c can increase the power supply amount according to the received power of the power transmission assisting device 15.
  • the power receiving devices 3a to 3e are installed in any region R1 to R5 having different current amplitude and voltage amplitude. The power supply amount to the power receiving devices 3a to 3e can be kept high.
  • the power transmission auxiliary device 15 can receive power by the magnetic field interlinked with the opening 20 because the opening 20 of the coil 16 is disposed in the interlinkage region of the magnetic flux generated around the power transmission lines 8 and 9. .
  • the power transmission auxiliary device 15 is configured such that the power receiving electrodes 18 and 19 receive power from the power transmitting antenna 4 with the electric field as the main coupling. For this reason, the power transmission efficiency transmitted to the power receiving apparatuses 3a to 3e according to the power receiving action can be increased. Therefore, even if the power transmission antenna 4 includes a region with a low current amplitude (for example, the region R4), the power transmission efficiency can be increased.
  • the power receiving electrodes 18 and 19 are disposed along the outer periphery of the coil 16, they can be installed without blocking the magnetic field emitted from the opening 20 of the coil 16. As a result, the magnetic field emitted to the power receiving antenna 10 can be made as high as possible.
  • the power receiving electrodes 18 and 19 are arranged so that the flat surfaces thereof face the power transmission lines 8 and 9, respectively, and the action of receiving power from the power transmission lines 8 and 9 mainly by an electric field can be increased.
  • FIG. 7A and 7B are additional explanatory views of the second embodiment.
  • 7A and 7B are longitudinal side views of power transmission auxiliary devices 115 and 215 instead of the power transmission auxiliary device 15 of FIG. 2, and the difference from the first embodiment is the shape of the power receiving electrodes 118, 119, 218 and 219. .
  • Portions having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted as necessary. Hereinafter, different portions will be mainly described.
  • the 7A includes a power receiving electrode 118 and 119.
  • the power receiving electrodes 118 and 119 are each formed in a semi-annular shape along the XY plane (in the YZ section, “(” or “)” bracket shape).
  • the power receiving electrodes 118 and 119 have the same “bracket-like” structure regardless of where they are cut in the circumferential direction of the coil 16 on the XY plane. As shown in FIG. 7A, these power receiving electrodes 118 and 119 are arranged at a distance W from the power transmission lines 8 and 9, respectively. However, it is desirable to make this distance W as short as possible, thereby capacitive coupling. Can be increased.
  • the power receiving electrodes 218 and 219 are partly cut along the YZ plane and configured in an annular shape (C shape in the YZ cross section) along the XY plane (see FIG. 7B). (See notches 218a, 219a in FIG. 7B). Thereby, even if it compares with the structure shown to FIG. 7A, a capacitive coupling property can be improved further.
  • the power receiving electrodes 218 and 219 are arranged so as to be at a constant distance W from the power transmission lines 8 and 9. However, it is desirable to shorten the distance W as much as possible, thereby Connectivity can be increased.
  • FIG. 8 shows an additional explanatory diagram of the third embodiment.
  • FIG. 8 is a schematic longitudinal side view shown in place of FIG. 7A.
  • the difference from the first or second embodiment is that the dielectric 21 is inserted between the power transmission line 8 and the power receiving electrode 118 and the dielectric
  • the body 22 is inserted between the power transmission line 9 and the power receiving electrode 119.
  • a dielectric 21 having a relative dielectric constant ( ⁇ r) higher than 1 is provided between the power transmission line 8 and the power receiving electrode 118.
  • a dielectric 22 having a relative dielectric constant ( ⁇ r) higher than 1 is provided between the power transmission line 9 and the power receiving electrode 119.
  • FIG. 8 shows an example in which the dielectrics 21 and 22 are provided on the premise of the configuration of FIG. 7A.
  • the dielectrics 21 and 22 may be provided between the power receiving electrodes 218 and 219 and the power transmission lines 8 and 9 of the power transmission auxiliary device 215 illustrated in FIG.
  • FIG. 9 and 10 show additional explanatory views of the fourth embodiment.
  • the fourth embodiment is different from the first embodiment in that power receiving electrodes 318a to 318f and 319a to 319f are provided so as to face a plurality of pairs of power transmission lines 8 and 9, respectively.
  • 9 shows a schematic plan view of a wireless power feeding system 301 shown in place of FIG. 1, and
  • FIG. 10 schematically shows a perspective view of a facing portion.
  • the wireless power feeding system 301 includes a power transmission auxiliary device 315, and the power transmission auxiliary device 315 includes a plurality of power receiving electrodes 318a to 318f and 319a to 319f.
  • the plurality of power receiving electrodes 318a to 318f and 319a to 319f are provided with a plurality (two or more) of portions facing the power transmission lines 8 and 9, respectively. It has been. Further, as shown in FIG. 10, the plurality of power receiving electrodes 318a to 318f are short-circuited to the terminal 16a side which is the upper end node side of the coil 16, and the plurality of power receiving electrodes 319a to 319f are connected to the lower end node side of the coil 16. Is short-circuited to the terminal 16b side. In the present embodiment, the same effects as those of the above-described embodiments are obtained.
  • the wireless power feeding system 401 of the fifth embodiment includes a ground plane 409 in which one of the pair of power transmission lines (408, 409) is configured by a single wire 408 and the other is spaced apart from the single wire 408. It shows about form.
  • FIG. 11 shows a schematic plan view instead of FIG. 1, and FIG. 12 shows a schematic vertical side view instead of FIG.
  • a ground surface 409 is installed along the XY direction in a flat plate shape, for example.
  • the ground plane 409 is installed as an earth plane (equivalent potential plane).
  • a single wire 408 is provided in parallel with the ground surface 409 so as to be separated in the surface normal direction (for example, the Z direction) of the ground surface 409.
  • the “pair of power transmission lines” is configured as an unbalanced line by the single line 408 and the ground plane 409.
  • the single wire 408 includes an opening loop 413a corresponding to the “specific opening 13a” of the above-described embodiment by being wound along the XY direction one or more times while being separated in the surface normal direction of the ground surface 409.
  • the power feeding circuit 5 outputs AC power to the single line 408 and the ground plane 409
  • the power receiving antenna 10 can receive large power from the opening loop 413 a and can supply power to the load circuit 11.
  • a power transmission auxiliary device 415 is installed around the opening loop 413a (near field).
  • the power transmission auxiliary device 415 is configured by connecting a coil 16, a capacitor 17, a single wire power receiving electrode (corresponding to a power receiving electrode) 418, and a ground surface power receiving electrode (corresponding to a power receiving electrode) 419.
  • the configurations and connection forms of the coil 16 and the capacitor 17 are the same as those of the coil 16 and the capacitor 17 described in the first embodiment.
  • the coil 16 is disposed on the inner side in the XY direction of the opening loop 413a of the single wire 408, and is disposed so that the surface normal direction of the opening 20 of the coil 16 is directed in the Z direction.
  • the coil 16 is arranged so that the opening 20 is linked with the magnetic flux generated from the single wire 408, and is arranged in a direction intersecting (eg, orthogonal to) the magnetic field formed by the single wire 408, for example.
  • a capacitor 17 is connected between both terminals 16a and 16b of the coil 16.
  • the capacitor 17 is connected in parallel with the coil 16 so as to resonate at the same frequency as the frequency of the AC power output from the power feeding circuit 5.
  • the capacitor 17 may or may not be provided, and even if the capacitor 17 is provided in a connected form, it is not set to a capacitance value that resonates at the same frequency as the frequency of the AC power output from the power supply circuit 5. May be.
  • one end of the capacitor 17 is a spiral of a finite length solenoid.
  • the other end is structurally connected to a terminal 16b which is a spiral cylindrical lower end node of a finite length solenoid.
  • the single-wire power receiving electrode 418 is disposed along the outer periphery of the coil 16 in the XY direction, for example.
  • a part of the power receiving electrode 418 for the single wire is formed inside the opening loop 413a inside the single wire 408 in a state where the conductive member is in a predetermined shape (for example, a flat plate member is bent into a circle in the XY direction). It is provided and arranged.
  • the single-wire power receiving electrode 418 is provided with a close space between the single wire 408 and electric lines of force extend between the single-wire power receiving electrode 418 and the single wire 408 so as to be capacitively coupled.
  • the single-wire power receiving electrode 418 is arranged along the inner side of the single wire 408 and separated from the single wire 408 by a predetermined distance, for example.
  • the single-wire power receiving electrode 418 is provided to receive power mainly by an electric field between the single-wire power receiving electrode 418 and the single wire 408 positioned in the vicinity thereof.
  • the single-wire power receiving electrode 418 is disposed so as to be capacitively coupled to the single wire 408.
  • the ground plane power receiving electrode 419 is arranged corresponding to the ground plane 409.
  • the ground-surface power receiving electrode 419 is installed, for example, in the vicinity of the ground surface 409 in the Z direction in a state in which the conductive member has a predetermined shape (for example, a flat plate member is punched into a ring shape).
  • the electric lines of force extend between the ground plane power receiving electrode 419 and the ground plane 409 so as to be capacitively coupled.
  • the ground plane power receiving electrode 419 is formed in a flat annular plate shape, and the flat annular plate-like surface and the plate-like surface of the ground surface 409 are arranged to face each other. .
  • the single-wire power receiving electrode 418 is short-circuited, for example, at a terminal 16 a serving as an upper end node of one end of the coil 16.
  • the ground-side power receiving electrode 419 is short-circuited, for example, at a terminal 16 b that is, for example, a lower end node of the other end of the coil 16.
  • the ground surface power receiving electrode 419 is preferably installed on the outer periphery in the XY direction of the coil 16, and in this case, the opening 20 of the coil 16 can be prevented from being blocked. Therefore, the magnetic field emitted to the power receiving antenna 10 can be increased as much as possible.
  • FIG. 13 is an additional explanatory diagram of the sixth embodiment.
  • FIG. 13 shows a schematic longitudinal side view instead of FIG. This embodiment is different from the first embodiment in that a pair of power receiving electrodes 518 and 519 are installed on the outer periphery of the pair of power transmission lines 8 and 9.
  • the power transmission auxiliary device 515 includes a pair of power receiving electrodes 518 and 519.
  • the pair of power receiving electrodes 518 and 519 are installed around the coil 16 and are short-circuited to the coil 16. These power receiving electrodes 518 and 519 are arranged along the outer circumference of the coil 16 in the XY direction and along the outer circumference of the power transmission lines 8 and 9, respectively, corresponding to the power transmission lines 8 and 9.
  • the other configurations of the power receiving electrodes 518 and 519 are the same as those of the power receiving electrodes 18 and 19, and thus the description thereof is omitted. Also in the sixth embodiment, the same operational effects as those of the above-described embodiment are obtained.
  • the present invention is not limited to the above-described embodiment, and for example, the following modifications or expansions are possible. It goes without saying that the configurations of these embodiments can be applied in appropriate combinations.
  • the dielectrics 21 and 22 of the third embodiment described with reference to FIGS. 7A and 7B have the single-wire power receiving electrode 418 and the single wire 408 shown in FIG. 12 regardless of the structures of FIGS. 2, 7A, and 7B. Or between the ground plane power receiving electrode 419 and the ground plane 409.
  • the “pair of power transmission lines” is not limited to the above-described form, and may be applied to, for example, two parallel lines. That is, you may apply to the form which installed the power transmission lines 8 and 9 in parallel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un dispositif auxiliaire de transmission d'énergie, appliqué à une configuration dans laquelle un dispositif de transmission d'énergie (2) fournit en sortie de l'énergie CA telle que la distribution d'amplitude de courant varie en continu dans une paire de lignes de transmission d'énergie (8, 9 ; 408, 409), et des dispositifs de réception d'énergie (3a-3e) reçoivent de l'énergie des lignes de transmission d'énergie de régions prédéterminées (R1-R5), où le dispositif auxiliaire de transmission d'énergie comprend : une bobine (16) dans laquelle une ouverture (20) est située dans la région de liaison d'un flux produit autour des lignes de transmission d'énergie en réponse à la sortie de l'énergie CA de sorte que la distribution d'amplitude de courant varie en continu dans la paire de lignes de transmission d'énergie ; et une paire d'électrodes de réception d'énergie (18, 19 ; 118, 119 ; 218, 219 ; 318a-318f ; 319a-319f ; 418, 419 ; 518, 519), dont au moins une d'entre elles est située en correspondance avec la paire de lignes de transmission d'énergie, et qui reçoivent de l'électricité des lignes de transmission d'énergie par l'intermédiaire du champ électrique.
PCT/JP2016/002609 2015-06-19 2016-05-30 Dispositif auxiliaire de transmission d'énergie et système d'alimentation électrique sans fil Ceased WO2016203720A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015123677A JP2017011844A (ja) 2015-06-19 2015-06-19 送電補助装置及び無線給電システム
JP2015-123677 2015-06-19

Publications (1)

Publication Number Publication Date
WO2016203720A1 true WO2016203720A1 (fr) 2016-12-22

Family

ID=57545335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/002609 Ceased WO2016203720A1 (fr) 2015-06-19 2016-05-30 Dispositif auxiliaire de transmission d'énergie et système d'alimentation électrique sans fil

Country Status (2)

Country Link
JP (1) JP2017011844A (fr)
WO (1) WO2016203720A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019053945A1 (fr) * 2017-09-12 2019-03-21 株式会社村田製作所 Dispositif d'émission de puissance et dispositif de réception de puissance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014068220A (ja) * 2012-09-26 2014-04-17 Nippon Soken Inc 通信システム
WO2015002126A1 (fr) * 2013-07-01 2015-01-08 株式会社村田製作所 Système d'émission de puissance sans fil
JP2015012702A (ja) * 2013-06-28 2015-01-19 株式会社エクォス・リサーチ アンテナコイルユニット
JP2015018383A (ja) * 2013-07-10 2015-01-29 株式会社日本自動車部品総合研究所 給電システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014068220A (ja) * 2012-09-26 2014-04-17 Nippon Soken Inc 通信システム
JP2015012702A (ja) * 2013-06-28 2015-01-19 株式会社エクォス・リサーチ アンテナコイルユニット
WO2015002126A1 (fr) * 2013-07-01 2015-01-08 株式会社村田製作所 Système d'émission de puissance sans fil
JP2015018383A (ja) * 2013-07-10 2015-01-29 株式会社日本自動車部品総合研究所 給電システム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019053945A1 (fr) * 2017-09-12 2019-03-21 株式会社村田製作所 Dispositif d'émission de puissance et dispositif de réception de puissance
JPWO2019053945A1 (ja) * 2017-09-12 2019-11-07 株式会社村田製作所 電力送電装置および電力受電装置
US10998772B2 (en) 2017-09-12 2021-05-04 Murata Manufacturing Co., Ltd. Electric power transmitting device and electric power receiving device

Also Published As

Publication number Publication date
JP2017011844A (ja) 2017-01-12

Similar Documents

Publication Publication Date Title
US20210012959A1 (en) Coil module, wireless charging transmitting apparatus, receiving apparatus, system, and terminal
US9426933B2 (en) Resonance type non-contact power feeding system, power transmission side apparatus and in-vehicle charging apparatus of resonance type non-contact power feeding system
US10069336B2 (en) Inductive charging device, electric vehicle, charging station, and method for inductive charging
CN103490526B (zh) 用于感应地无线输出能量的装置
EP3385963B1 (fr) Dispositif de bobine
CN105720695A (zh) 感应式无线电力传输系统
US11637460B2 (en) Wireless power transfer system having an electric field shield member
AU2002215265B2 (en) An antenna device
JP2018011475A (ja) 受信装置及び無線伝送システム
JP6373797B2 (ja) 受電装置および送電装置
EP3319207B1 (fr) Dispositif de transmission d'énergie sans fil pour transmettre de l'énergie en utilisant un champ magnétique et un champ électrique, et dispositif de réception de puissance sans fil pour recevoir la puissance provenant du dispositif de transmission de puissance sans fil
WO2016203720A1 (fr) Dispositif auxiliaire de transmission d'énergie et système d'alimentation électrique sans fil
US10461410B2 (en) Coaxial helix antennas
CN105720699A (zh) 感应式无线电力传输系统
CN104919329A (zh) 用于磁共振成像系统的tem谐振器型射频天线装置
JP6171726B2 (ja) 非接触給電装置の製造方法
WO2013018268A1 (fr) Bobine de transmission électrique et appareil d'alimentation en courant sans contact utilisant celle-ci
US9633762B2 (en) Cable
US10930430B2 (en) Coil assembly
WO2016208402A1 (fr) Dispositif d'émission de courant, dispositif de réception de courant, et système d'émission de courant
KR101371058B1 (ko) 전기 공진을 이용한 송전측 코일조립체, 수전측 코일조립체 및 무선 전력 송수신장치
RU2619087C2 (ru) Протяженный по оси цилиндра кольцевой ферромагнитный сердечник высокочастотного трансформатора
WO2016114158A1 (fr) Système de transmission d'énergie sans fil
JP6173588B2 (ja) アンテナ装置
JP6567329B2 (ja) 共振器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16811199

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16811199

Country of ref document: EP

Kind code of ref document: A1